import { constantRoutes } from '@/router';
import Layout from '@/layout/index';
import ParentView from '@/components/ParentView';
import { toCamelCase } from '@/utils';
import { systemAuthListLeftMenus } from '../../api/menu';

const permission = {
  state: {
    routes: [],
    addRoutes: [],
    sidebarRouters: []
  },
  mutations: {
    SET_ROUTES: (state, routes) => {
      state.addRoutes = routes;
      state.routes = constantRoutes.concat(routes);
    },
    SET_DEFAULT_ROUTES: (state, routes) => {
      state.defaultRoutes = constantRoutes.concat(routes);
    },
    SET_TOPBAR_ROUTES: (state, routes) => {
      state.topbarRouters = routes;
    },
    SET_SIDEBAR_ROUTERS: (state, routes) => {
      state.sidebarRouters = routes;
    }
  },
  actions: {
    // 生成路由
    GenerateRoutes({ commit }) {
      return new Promise(resolve => {
	      // 向后端请求路由数据
	      systemAuthListLeftMenus().then(res => {
	        if (res.data.status === 200) {
	        	const cpData = res.data.res.map(x => {
	        		// 处理没有子的菜单（类似：首页）
			        if (x.parentId === 0 && !x.children) {
				        x.children = [{
					        ...x,
					        meta: {
						        title: x.name,
						        icon: x.icon,
						        noCache: !x.noCache
					        }
				        }];
			        }
			        return x;
		        });
		        const sidebarRoutes = filterAsyncRouter(JSON.parse(JSON.stringify(cpData)));
		        const rewriteRoutes = filterAsyncRouter(JSON.parse(JSON.stringify(cpData)), false, true);
		        rewriteRoutes.push({ path: '*', redirect: '/404', hidden: true });
		        commit('SET_ROUTES', rewriteRoutes);
		        commit('SET_SIDEBAR_ROUTERS', constantRoutes.concat(sidebarRoutes));
		        commit('SET_DEFAULT_ROUTES', sidebarRoutes);
		        commit('SET_TOPBAR_ROUTES', sidebarRoutes);
		        resolve(rewriteRoutes);
	        }
        });
      });
    }
  }
};

import store from './tagsView';
import { componentPath } from '../../router/permision-router-path-config';
import { firstCharacterToLowerCase } from '../../utils/jk/jk-tool';
// 遍历后台传来的路由字符串，转换为组件对象
function filterAsyncRouter(asyncRouterMap, lastRouter = false, type = false) {
	return asyncRouterMap.filter(route => {
    // 将后端原有耦合前端的逻辑，迁移到此处
    // 处理 meta 属性
	  route.meta = {
      title: route.name,
      icon: route.icon,
      noCache: !route.keepAlive
    };
		route.componentStr = route.component;
    // 路由地址转首字母大写驼峰，作为路由名称，适配keepAlive
	// 	route.name = toCamelCase(route.path, true);
		let fStr = route.path.substring(0, 1);
		fStr = fStr.toUpperCase();
		route.name = fStr + route.path.substring(1, route.path.length);
		if (route.keepAlive) {
			store.state.cachedViews.push(route.name);
		}
		route.hidden = !route.visible;
    // 处理 component 属性
     if (route.children) { // 父节点
      if (route.parentId === 0) {
	      // console.log('罗名称', route.name);
        route.component = Layout;
      } else {
        route.component = ParentView;
      }
    } else { // 根节点
	    route.component = loadView(route);
    }

    // filterChildren
    if (type && route.children) {
      route.children = filterChildren(route.children);
    }
    if (route.children != null && route.children && route.children.length) {
      route.children = filterAsyncRouter(route.children, route, type);
    } else {
      delete route['children'];
    }
    return true;
  });
}

function filterChildren(childrenMap, lastRouter = false) {
  let children = [];
  childrenMap.forEach((el, index) => {
    if (el.children && el.children.length) {
      if (el.component === 'ParentView' && !lastRouter) {
        el.children.forEach(c => {
          c.path = el.path + '/' + c.path;
          if (c.children && c.children.length) {
            children = children.concat(filterChildren(c.children, c));
            return;
          }
          children.push(c);
        });
        return;
      }
    }
    if (lastRouter) {
      el.path = lastRouter.path + '/' + el.path;
    }
    children = children.concat(el);
  });
  return children;
}

export const loadView = (routeItem) => {
  let rName = '';
  if (routeItem.parentId) {
    rName = firstCharacterToLowerCase(routeItem.name);
  } else {
    rName = routeItem.name;
  }
  return componentPath[rName];
	// return (resolve) => require([`@/views/${routeItem.component}`], resolve);
};

export default permission;
